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<body><span class="vcard"><a class="email" href="mailto:tobias@grosser.es" title="Tobias Grosser <tobias@grosser.es>"> <span class="fn">Tobias Grosser</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [Polly] -polly-parallel miscompiles two LNT benchmarks"
href="https://llvm.org/bugs/show_bug.cgi?id=26434">bug 26434</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [Polly] -polly-parallel miscompiles two LNT benchmarks"
href="https://llvm.org/bugs/show_bug.cgi?id=26434#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [Polly] -polly-parallel miscompiles two LNT benchmarks"
href="https://llvm.org/bugs/show_bug.cgi?id=26434">bug 26434</a>
from <span class="vcard"><a class="email" href="mailto:tobias@grosser.es" title="Tobias Grosser <tobias@grosser.es>"> <span class="fn">Tobias Grosser</span></a>
</span></b>
<pre>This was likely not a miscompile, but rather too many threads running in
parallel as we run LNT with -j16 and then allowed each program to create itself
threads without limitation (which resulted in one thread per core and process).
This issue was resolved by hardcoding the number of parallel threads per
process with OMP_NUM_THREADS=2.</pre>
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